Upcoming Geomagnetic Storm May Spark Northern Lights Tonight

An incoming coronal mass ejection (CME) could cause auroras to light up the night sky on August 7-8, as it interacts with Earth’s magnetic field. According to space weather experts, even a minor impact from the CME might be enough to generate stunning auroras, especially in northern regions, depending on the storm’s strength and orientation.

Forecasts from NOAA and the UK Met Office suggest that minor (G1) to moderate (G2) geomagnetic storms are possible, with a small chance of reaching strong (G3) levels. The timing of the CME’s arrival remains uncertain, but NOAA predicts activity could start as early as 11:00 p.m. EDT on August 7, with peak storming between 2:00 a.m. and 5:00 a.m. on August 8. The UK forecasters indicate the storm may arrive later, increasing the likelihood of auroras overnight on August 8-9.

For skywatchers in northern latitudes, this presents a prime opportunity to see the northern lights, weather permitting. Conditions such as a clear, dark sky and minimal light pollution are ideal. Regions in the U.S. that may witness auroras tonight include Alaska, Montana, North Dakota, Minnesota, Wisconsin, Michigan, Maine, South Dakota, Vermont, New Hampshire, Idaho, Washington, Oregon, New York, Wyoming, Iowa, Nebraska, and Illinois.